Upload & Sell: Off
Curious to hear others' opinions of the lens as well...
I had 3 copies of the old one - not one focused correctly without AF fine-tuning, and 2/3 had focus motors die. I swore off Sigma lenses for a long time because of that lens... That said, I have their 85/1.4 now, and love the heck out of it.
If the optics of the new 30/1.4 Art lens are as good as or better than the old one, and the reliability is comparable to Sigma's other new lenses, I'd wager to say it's a winner of a lens.